State and county health officials have launched separate investigations at Western Medical Center-Anaheim to find out if several emergency room staff members have come down with Legionnaire's disease. Despite the need for the investigations at the hospital, county health officials said that a preliminary review of the case found no evidence of the disease at the facility. "All the evidence so far indicates that there is nothing to worry about," said Dr.

Orange County health officials have tentatively concluded that a county-run clinic in Westminster is not harboring the bacteria that cause Legionnaire's disease. Although results of a few laboratory tests remain to be completed, Dr. George Gellert, the county's epidemiologist, said Friday that there is "no reason" to believe the building is contaminated.

Orange County and state officials are conducting separate investigations to determine whether a county-run clinic in Westminster is harboring the bacteria that cause Legionnaire's disease. The unusual building examinations were prompted last Thursday when a complaint was filed with the California Occupational Safety and Health Administration involving a clinic employee who became ill and whose diagnosis remains uncertain.

A janitor stricken after working in a Social Security building closed last fall by an outbreak of legionnaire's disease has died. Fifteen employees of the Social Security Administration offices in Richmond became ill, including Margaret Thomas, 48, the latest to die, and Rosalind Sheffield, 39, who died in September. Thomas and Sheffield worked in the basement.

A 10th case of Legionnaires' disease has been confirmed among Social Security Administration employees who worked at a records center here. Laboratory testing of cultures taken from water in the building confirmed the disease-causing bacteria's presence in a cooling tower and a basement sink used by janitors. A 37-year-old janitor died of the disease on Sept. 12, and the building has been closed since then. One woman with the disease is hospitalized in critical condition.

The Social Security Administration building where Legionnaires' disease struck nine workers, killing one, could remain closed for another two weeks, officials said. Scattered pockets of bacteria have been found throughout the sprawling six-story building, making clean-up efforts tougher. Results of water tests showed that the basement, water fountains and elevator shafts were among the infected areas, said Tino Serrano of the U.S. Occupational Health and Safety Administration.

The western regional office of the Social Security Administration in Richmond will remain closed for at least a week after the death of a building janitor who had Legionnaires' disease, officials said Monday. Since 37-year-old Rosalind Sheffield died a week ago, health experts said they have identified three more confirmed cases of the disease and five probable cases among people who worked in the building--including another custodian who is hospitalized in critical condition.

A janitor at a Social Security Administration building where 12 workers were struck with pneumonia died of Legionnaire's disease, officials said Thursday. The woman, Rosalind Sheffield, 37, died of Legionnaire's disease at Merritt-Peralta Hospital in Oakland, spokeswoman Nancy Barsky said. Earlier in the day, about 1,200 workers at the building were told to go home and not return until Monday while investigators try to find the source of the mysterious pneumonia outbreak.